| Patents for C21C 5 - Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel (14,381) |
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| 05/20/1999 | WO1999024627A1 Method for producing directly-reduced iron, liquid pig iron and steel |
| 05/20/1999 | CA2309606A1 Method for producing directly-reduced iron, liquid pig iron and steel |
| 05/19/1999 | EP0916436A1 Monolithic, refractory, ceramic well brick |
| 05/19/1999 | EP0915995A1 Multipurpose lance |
| 05/19/1999 | EP0915992A1 A process for the direct production of cast iron from iron bearing ore, and an apparatus suitable to carry out said process |
| 05/18/1999 | US5904895 Apparatus for electric steelmaking |
| 05/18/1999 | CA1340545C Process and apparatus for post combustion of reaction gases |
| 05/14/1999 | WO1999023264A1 Method and device for controlling the formation of foamed slag in an arc furnace |
| 05/12/1999 | EP0914478A1 A top injection lance |
| 05/12/1999 | EP0914476A1 Apparatus for keeping optimal penetration depth formed at front end of oxygen tuyere and method for keeping the same |
| 05/12/1999 | CN2318229Y Combined extrution oxygen gun blow head |
| 05/11/1999 | US5902375 Method of melting tinned iron scrap |
| 05/11/1999 | US5902372 Process and apparatus for processing a shredder light fraction in a melt |
| 05/11/1999 | US5902371 Stacking heated ladles of molten steel at holding station before casting |
| 05/11/1999 | US5901580 Process and installation for the separation of air |
| 05/11/1999 | CA2154299C Electric arc furnace post combustion method |
| 05/11/1999 | CA2002233C Compact lance |
| 05/06/1999 | WO1999022032A1 Inclined heat pipe lance or tuyere with controllable heat extraction |
| 05/06/1999 | EP0913487A1 Method for vacuum/reduced-pressure refining and facility for vacuum/reduced-pressure refining |
| 05/06/1999 | DE19748389A1 Unit for blowing solids into metal melts in metallurgical plants |
| 05/05/1999 | CN1043245C Tilting Metallurgical unit comprising several vessels |
| 05/05/1999 | CN1043244C Method for production of pig iron or steel and cement clinker from slag |
| 05/04/1999 | US5900209 Plant for producing metal melts |
| 05/04/1999 | CA2117754C Mercury contaminated mud treatment |
| 04/29/1999 | WO1999020966A1 Structure of metallurgical furnace and operating method using the same metallurgical furnace |
| 04/29/1999 | WO1999020802A1 Method for continuous smelting of solid metal products |
| 04/29/1999 | CA2242099A1 Steel production method |
| 04/28/1999 | EP0910678A1 Process for reusing dusts from metallurgical processes, such as steel converter dusts containing zinc |
| 04/28/1999 | EP0879548B1 Electrode and cooling element for a metallurgical vessel |
| 04/27/1999 | US5898726 Preheater for arc furnaces |
| 04/27/1999 | US5897684 Basic oxygen process with iron oxide pellet addition |
| 04/27/1999 | CA2099023C Modified manifold assembly for directional gas distribution device |
| 04/22/1999 | DE19801426C1 Burner head for a blow lance |
| 04/21/1999 | EP0909942A1 Device for aspiration of a gas sample from a process-gas enclosure under vacuum |
| 04/21/1999 | EP0909334A1 Method for making steel in a liquid melt-fed electric furnace |
| 04/21/1999 | EP0909333A1 Arc furnace with an electrode receiving chamber |
| 04/21/1999 | EP0909227A1 Stopper rod |
| 04/21/1999 | CN1043061C Method for directly converting stainless steel by chromium ore fusion reduction |
| 04/21/1999 | CN1043055C Method for producing steel in electric arc furnace and electric arc furnace therefor |
| 04/20/1999 | CA2083129C Electric arc furnace arrangement for producing steel |
| 04/15/1999 | WO1999018245A1 Method for smelting fine grained direct reduced iron in an electric arc furnace |
| 04/14/1999 | CN1042956C Method and device for directly feeding liquid metal from ladle into electric furnace |
| 04/08/1999 | WO1999016917A1 Pyrometallurgical method and device for separating zinc and/or cadmium from lead in metallurgical residues |
| 04/08/1999 | WO1999016728A1 Device for preheating charge materials |
| 04/08/1999 | DE19744151A1 Method for melting fine-grained, directly reduced iron in an electric arc furnace |
| 04/07/1999 | EP0796351B1 Smelting installation with a current supply network with a relatively low short-circuit rating |
| 03/30/1999 | US5889810 Apparatus for preheating and melting of scrap and process for the same |
| 03/30/1999 | US5889809 Cooling system for electrodes in D.C. electric arc furnaces |
| 03/30/1999 | US5888458 Melting furnace of metals and melting method thereof |
| 03/30/1999 | CA2134801C Controlling pouring stream and receiver environment |
| 03/25/1999 | WO1999014381A1 Steel slag and ferriferous material reprocessing process useful to produce pig iron and environmentally compatible slags |
| 03/25/1999 | CA2271489A1 Steel slag and ferriferous material reprocessing process useful to produce pig iron and environmentally compatible slags |
| 03/24/1999 | EP0842303B1 Oxygen lance head for treating molten masses |
| 03/24/1999 | CN1042649C Metallurgy of 12Cr 2Mo W V TiB by oxygen converter |
| 03/23/1999 | US5887016 Charging device for arc furnaces |
| 03/23/1999 | US5885325 Process and apparatus for the manufacture of steel |
| 03/23/1999 | US5885323 Foamy slag process using multi-circuit lance |
| 03/18/1999 | WO1999012622A1 Method and arrangement for treatment of gases |
| 03/18/1999 | DE19817590C1 Combination lance for treatment of metallurgical melts |
| 03/17/1999 | CN1211316A Iron-base scrap preheating apparatus and method |
| 03/16/1999 | US5883918 Oxy:fuel melting furnace |
| 03/16/1999 | US5882578 Tilting metallurgical unit comprising several vessels |
| 03/16/1999 | US5882576 Insulating cover for torpedo cars |
| 03/16/1999 | US5882377 Process for smelting reduction of chromium ore |
| 03/16/1999 | US5882374 Process for producing foundry iron with an insulated electrode |
| 03/16/1999 | US5882373 Major part of gas not sent to metal treatment unit during periods of low electrical consumption but temporarily stored in liquid or gas form |
| 03/11/1999 | WO1999011827A1 Oxygen injection lance orifice for steel-producing electric furnace |
| 03/11/1999 | WO1999011571A1 Oxygen-fuel boost reformer process and apparatus |
| 03/10/1999 | CN1210659A Electrode and cooling element for metallurgical vessel |
| 03/10/1999 | CN1210151A Enhanced oxygen blowing process for steel converter |
| 03/10/1999 | CN1042444C Chromium ore smelting reduction process |
| 03/09/1999 | US5879617 Apparatus for treating waste materials |
| 03/04/1999 | DE19737220A1 Metallurgical furnace for production of nonferrous metals from a melt by ausmelt technology |
| 03/03/1999 | EP0734458B1 Loading device for feeding liquid metal into an electric furnace |
| 03/03/1999 | CN1209458A Continuous steel-casting production process for small electric oven |
| 02/25/1999 | WO1999009232A1 Metallurgical vessel |
| 02/25/1999 | WO1999008981A1 Refractory ceramic moulding |
| 02/23/1999 | CA2135496C Dc arc furnace |
| 02/23/1999 | CA2135495C Dc arc furnace |
| 02/18/1999 | DE19735495A1 Refractory ceramic article, especially brick for contacting aggressive non-ferrous metal melts |
| 02/17/1999 | CN1042144C Process for melting metal or non metal and material consisting of at least on hydrocarbyl polymer therefor |
| 02/17/1999 | CN1042143C Melting furnace with gas injection |
| 02/17/1999 | CN1042142C Steelmaking process |
| 02/11/1999 | WO1999006604A1 Apparatus and method for stirring molten metal using electromagnetic field |
| 02/10/1999 | CN2307003Y Steel-smelting furnace |
| 02/09/1999 | US5868817 Efficiently dephosphorizing, decarbonizing, and/or desulfurizing; adjusting the amount of flux to be charged, the amount of bottom-blown gas admitted and the bottom-blowing agitation power |
| 02/09/1999 | US5868816 Smelting of high-purity steels having extremely low contents of carbon, nitrogen or oxygen. |
| 02/04/1999 | WO1999005466A1 Steelmaking process using direct reduction iron |
| 02/03/1999 | EP0894033A1 Gas-flushing base for metallurgical vessels |
| 02/03/1999 | EP0621813B1 Suppression of fume in metal pouring |
| 02/02/1999 | US5865876 Multipurpose lance |
| 02/02/1999 | US5865206 Process and apparatus for backing-up or supplementing a gas supply system |
| 01/28/1999 | DE19731280A1 Apparatus for treatment of metal melts using injection of oxygen or gases containing oxygen |
| 01/27/1999 | EP0893509A1 Waste heat boiler |
| 01/27/1999 | CN1206436A Producing stainless steel in parallel operated vessels |
| 01/27/1999 | CN1041843C Steel manufacturing method using converter |
| 01/26/1999 | US5863490 Gas blast nozzle for molten metal and method of using the same |
| 01/21/1999 | WO1999002741A1 Apparatus and method for cooling a basic oxygen furnace trunnion ring |
| 01/21/1999 | WO1999002740A1 Steelworks converter with cone cooling system |
| 01/21/1999 | WO1999002739A1 Method for controlling a smelting reduction process |